A study of the cerebral venous drainage patterns in craniosynostosis: nonsyndromic cases and the induction effect of Virchow's law on venous sinuses.

Objective: Surgical intervention is commonly necessary for craniosynostosis. One of the preoperative concerns revolves around the cerebral venous drainage pattern and its potential involvement during surgery. Although there have been reports regarding venous drainage patterns in syndromic craniosynostosis, studies of nonsyndromic cases have been rare.

[Venous Anatomy of the Superior and Inferior Sagittal Sinuses].

The superior sagittal sinus(SSS)is contained within the dura, which consists of the dura propria and osteal dura at the junction of the falx cerebri, in addition to the attachment of the falx to the cranial vault. The SSS extends anteriorly from the foramen cecum and posteriorly to the torcular Herophili. The superior cerebral veins flow into the SSS, coursing under the lateral venous lacunae via bridging veins.

Large Tissue Debris Causing Cerebral Embolism After Transcatheter Aortic Valve Replacement.

Cerebral vascular embolism is one of the complications of transcatheter aortic valve replacement (TAVR). Thrombolytic therapy is not expected to be effective when embolic material consists of a large tissue fragment. Instead, mechanical aspiration may be more effective therapy for acute cerebral infarction after TAVR.

Nationwide survey of pediatric intracranial arteriovenous shunts in Japan: Japanese Pediatric Arteriovenous Shunts Study (JPAS).

The authors performed a nationwide study in Japan to evaluate the annual detected rate of pediatric intracranial arteriovenous (AV) shunts such as brain AV malformations (BAVMs), pial AV fistulas (PAVFs), vein of Galen aneurysmal malformations (VGAMs), and dural AV fistulas (DAVFs). These rates were revealed for the first time and showed that VGAM, DAVF, and PAVF were relatively common but that BAVMs were extremely rare in neonates and infants.

Recurrent periventricular hemorrhage in cerebral proliferative angiopathy: Case report.

Cerebral proliferative angiopathy (CPA) is a rare vascular lesion. Bleeding from CPA is uncommon, but the risk of rebleeding is high once it bleeds. We describe a case of CPA with multiple intra- and periventricular hemorrhages during 30-year follow-up.

Dural Arteriovenous Fistula of the Sinus of the Lesser Sphenoid Wing Presenting with Pontine Hemorrhage.

Background: Dural arteriovenous fistulas (DAVFs) of the sinus of the lesser sphenoid wing (SLSW) with leptomeningeal drainage are rare. We report a patient with a DAVF of the SLSW draining into the basal vein of Rosenthal (BVR) presenting with pontine hemorrhage.

Case Description: A 71-year-old man presented with sudden right hemisensory disturbance of the arm and leg.

Vein of Galen Aneurysmal Malformation in Monozygotic Twin.

Background: Vein of Galen aneurysmal malformation (VGAM) is a rare pediatric vascular malformation of the brain. Genetic backgrounds are not well elucidated. We report on a monozygotic twin with VGAM and his endovascular treatment, and the genetic analyses of the twins and their parents.

Neuro-Interventions for the Neonates with Brain Arteriovenous Fistulas: With Special Reference to Access Routes.

Neonatal neuro-intervention is challenging. The purpose of this article is to report the neuro-intervention for the neonates with brain arteriovenous fistulas (AVFs), with special reference to access routes. Fifteen neonates (12 boys and 3 girls) who underwent neuro-intervention within the first 14 days of life were -included.

Neuroradiological Manifestations of Hereditary Hemorrhagic Telangiectasia in 139 Japanese Patients.

The purpose of this study is to report the neuroradiological manifestations of hereditary hemorrhagic telangiectasia (HHT). One hundred and thirty-nine Japanese HHT patients (73 men and 66 women, aged 2-78 years) were included in this study. Diagnosis of HHT was based on genetic analysis and/or clinical diagnosis of Curaçao.

Late complication of surgically treated atlantoaxial instability: occipital bone erosion induced by protruded fixed titanium rod: a case report.

Objective: Polyaxial screw-rod fixation of C1-C2 is a relatively new technique to treat atlantoaxial instability, and there have been few reports in the literature outlining all possible complications. The purpose of this case report is to present the occurrence and management of occipital bone erosion induced by the protruded rostral part of a posterior atlantoaxial screw-rod construct causing headache.

Clinical Features: A 70-year-old Asian man with rheumatoid arthritis initially presented to our institution with atlantoaxial instability causing progressive quadraparesis and neck pain.

Radical excision combined with instrumented fixation in the management of thoracic epidural angiolipoma: a case report.

Introduction: Spinal angiolipoma is a benign uncommon neoplasm composed of mature lipocytes admixed with abnormal blood vessels. They account for only 0.04% to 1.

Spinal arteriovenous metameric syndrome in a neonate presenting with congestive heart failure: case report.

Background: Spinal arteriovenous metameric syndrome (SAMS) is a combination of more than two separate vascular malformations in the same embryonic metameres. This syndrome, also known as Cobb syndrome, is rare, especially in the neonate.

Case Description: A neonatal girl with a birthmark in the occipital and posterior nuchal regions presented with severe heart failure on the day of birth.

Transcardiac cerebral angiography in a child.

The authors present a case in which transfemoral venous, transcardiac cerebral angiography was performed. In this 5-year-old girl with PHACE syndrome, both transfemoral and transbrachial arterial routes could not be used due to aortic interruption and aneurysmal dilation and small looping of the proximal portion of bilateral subclavian arteries. A 5-F balloon-tipped double-lumen catheter was advanced to the right atrium of the heart from the femoral vein.

[Spontaneous cerebrospinal fluid rhinorrhea associated with long-standing overt ventriculomegaly in adults (LOVA)].

Objective: Spontaneous cerebrospinal fluid rhinorrhea associated with aqueductal stenosis is rare. CSF diversion is reported to be a failure in the majority of cases. The combination of the repair of the skull base and CSF diversion is reported to be successful.

[Transsphenoidal surgery for pituitary tumors from microsurgery to the endoscopic surgery: single surgeon's experience].

We reviewed results of the surgical outcome of pituitary tumors treated via the transsphenoidal approach between January, 1994 and January, 2010 at our institution. This data included 100 patients (124 procedures) treated through the sublabial transsphenoidal approach and 45 patients (54 procedures) treated through the endoscopic endonasal (bilateral nostrils) transsphenoidal approach performed by a single surgeon. The extent of tumor removal was significantly improved with endoscopic surgery; adjuvant gamma knife radiosurgery was needed for 65% of patients undergoing microsurgery vs.